CN106337351B - Bituminous pavement additionally provided with paving rib net - Google Patents
Bituminous pavement additionally provided with paving rib net Download PDFInfo
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- CN106337351B CN106337351B CN201610892368.2A CN201610892368A CN106337351B CN 106337351 B CN106337351 B CN 106337351B CN 201610892368 A CN201610892368 A CN 201610892368A CN 106337351 B CN106337351 B CN 106337351B
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- 239000011384 asphalt concrete Substances 0.000 claims abstract description 43
- 239000010426 asphalt Substances 0.000 claims abstract description 34
- 239000004567 concrete Substances 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 44
- 239000002344 surface layer Substances 0.000 abstract description 8
- 201000010099 disease Diseases 0.000 abstract description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/16—Reinforcements
- E01C11/165—Reinforcements particularly for bituminous or rubber- or plastic-bound pavings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an asphalt pavement additionally provided with a paving rib net, and belongs to the technical field of road construction. The structure of the asphalt pavement additionally provided with the paving rib net comprises a cement concrete base layer and an asphalt concrete pavement layer; the asphalt concrete pavement layer is characterized by also comprising a rib net, wherein the rib net is tiled on the upper side of the asphalt concrete pavement layer and embedded into the upper surface layer of the asphalt concrete pavement layer, so that the pavement is integrally flat, and the net lines of the rib net form an angle of 20-40 degrees with the direction of the road. The asphalt pavement is additionally paved with the rib nets to form an integral structure, the rib nets form transverse prestress, the transverse pushing effect of tire pressure on the pavement is reduced, and the track diseases are greatly reduced; and the load is effectively dispersed, and the crack resistance and the shock resistance of the asphalt pavement are improved, so that the durability of the pavement is improved, and the service life of the pavement is prolonged.
Description
Technical Field
The invention particularly relates to an asphalt pavement additionally provided with a paving rib net, and belongs to the technical field of road construction.
Background
The society develops rapidly, and the requirement on roads is increased along with the rapid development. The cement concrete pavement has the advantages of mature process, high strength, strong loading capacity and the like, but has poor driving comfort and insufficient durability. A large number of cement concrete pavements are subjected to maintenance and reconstruction, including that the cement concrete pavements built in the early stage are integrally damaged after the service life of the cement concrete pavements is reached, and the use of the roads is seriously influenced; and with the increase of traffic volume and the increasing overloading, the recently constructed cement concrete pavement can have local structural damage to different degrees in a short time after traffic.
The currently accepted improvement measure is to additionally lay an asphalt concrete layer on the original cement concrete pavement to build an asphalt composite pavement. The asphalt composite pavement is a semi-rigid structure formed by a cement concrete panel as a rigid base layer and an asphalt mixture flexible surface layer paved on the cement concrete panel, and has the advantages of good durability, comfortable driving and the like, convenient construction, low cost and small influence on traffic. Due to excellent performance in all aspects, the composite pavement structure is also commonly adopted for newly-built pavements.
However, the asphalt composite pavement still has defects, the flexible asphalt surface layer has instability, and the shrinkage cracking of the base layer easily causes the reflection cracking of the asphalt pavement; and the asphalt pavement layer has higher axle load sensitivity and is easy to generate track diseases. Ruts, one of the main problems of asphalt pavements, are easily pushed transversely under frequent and repeated rolling of vehicles, so that permanent deformation and accumulation of the pavement at the driving track are generated and longitudinal strip-shaped grooves are gradually formed, and lateral bulging usually occurs along with compression and settlement of an asphalt surface layer.
Particularly, at the intersection of the asphalt composite pavement, the traffic volume is large, the traffic composition is complex, and the vehicle needs larger acceleration when being frequently braked and started, so that larger pushing shear stress is generated on the pavement, the damage to the asphalt pavement is further deepened, the track disease is generated, and the performance is more obvious in continuous high-temperature weather. If the rut is not treated in time, the defect is continuously worsened, and when the rut reaches a certain depth, the pavement evenness is reduced, and the traffic performance is influenced. And when water is accumulated in the rut groove after rain, the vehicle is easy to float and slide, and the driving safety is seriously threatened. And the existing asphalt composite pavement has no self-healing capability after being damaged, and needs to be rebuilt once being damaged.
Disclosure of Invention
The invention aims to provide an asphalt pavement additionally paved with a rib net, which adopts the rib net to reinforce a pavement layer and form transverse prestress, effectively disperses transverse pushing and shearing stress of wheels on a flexible pavement layer and reduces rut diseases on the pavement. The invention mainly achieves the purpose through the following technical means:
the structure of the asphalt pavement additionally provided with the paving rib net comprises a cement concrete base layer and an asphalt concrete pavement layer; still be equipped with the muscle net, the muscle net tiling is in the upside of asphalt concrete pavement layer and embedding the upper surface layer of asphalt concrete pavement layer makes the whole level and smooth of road surface. The reinforcing is carried out the road surface to the muscle net to lock asphalt concrete to a certain extent, avoid horizontal shear stress to cause the road surface to warp and lead to the rut.
Preferably, the wire mesh has a mesh line forming an angle of 20-40 ° with the direction of the road. The rib net is paved on the upper surface layer of the asphalt concrete pavement layer, and the friction force of the tire to the pavement in all directions is dispersed by the rib net when the vehicle passes, so that the shear stress of the asphalt concrete is reduced. And the longitudinal shear stress draws the rib net along the longitudinal direction and folds along the transverse direction, thereby effectively resisting the transverse pushing action of the tire pressure on the road surface. However, the longitudinal friction is far greater than the transverse friction, so that when the included angle between the net line and the road direction is too large, the asphalt concrete may be pushed along the longitudinal direction too much, and the asphalt concrete at the net line is difficult to completely recover when the deformation occurs.
Preferably, the edges of the rib net at two sides of the road surface and the edges at two ends of the rib net along the road direction are bent downwards and extend to the bottom of the asphalt concrete road surface layer, and the extending length is not less than 15 cm.
Preferably, each edge of the mesh is fixed to the cement concrete base layer by a steel nail. The steel nails are not required to be fixed densely, the fixing force of the steel nails does not play a main role in the strength of the pavement, and the reinforcing effect of the rib net on the pavement depends on the integral structure formed after the rib net is embedded into the asphalt concrete layer. Because the rib net needs to be flattened as much as possible during construction, the edge of the fixed rib net is prevented from rebounding, and subsequent construction is facilitated.
Preferably, the reinforcing mesh is a flexible metal mesh instead of a conventional steel bar binding grid mesh.
Preferably, the rib net is a prismatic mesh net woven by steel wire ropes with the diameter of 4-10 mm; and at the node of the rib net, two steel wire ropes are mutually twisted.
Preferably, the mesh openings of the rib net are 8cm multiplied by 8cm to 12cm multiplied by 12 cm. The design of combining the thick net lines and the lower net-forming density ensures the strength of the net lines and simultaneously avoids the comfort and the integrity of the asphalt concrete pavement layer from being influenced by the rib net; and can be closely combined, so that the whole pavement layer forms an integral structure; meanwhile, the mesh size is suitable for most of the spans of tires, and the mesh size is ensured to be acted by a plurality of mesh lines simultaneously when the vehicle passes; and reduces the cost.
The invention also discloses a construction method of the asphalt pavement, which mainly comprises the following steps:
s1, after the pavement is finished, paving a cement concrete base layer;
s2, paving an asphalt concrete pavement layer on the cement concrete base layer and raking the pavement layer, wherein at least 15cm of spare space is left at two side edges and two ends of the reinforcement net paving section, and the asphalt concrete pavement layer is not compacted temporarily;
s3, cutting the rib net, spreading the cut rib net on the asphalt concrete pavement layer, and filling asphalt concrete on the rib net at the vacant position of the asphalt concrete;
s4, compacting the pavement, and embedding the rib nets into the asphalt concrete pavement layer; the pressing vehicle can be finished by one-time passing, and the rib net is embedded into the asphalt concrete and is wrapped;
and S5, putting the pavement into use after the pavement is qualified.
Further, in S3, the reinforcing mesh stretches 4-8% of the width in the transverse direction after being unfolded, is fixed to the cement concrete base layer at the two side edges of the reinforcing mesh by steel nails, and then is pressed into the asphalt concrete pavement layer. The rib net forms transverse prestress, so that the whole tension is formed on the pavement, and the strength of the pavement is improved; and this kind of road surface tension makes the asphalt concrete layer that has certain flexibility possess the selfreparing ability, and the effect of drawing in that the muscle net produced makes the road surface have and tends to whole smooth trend, especially in the weather of lasting high temperature, and bituminous paving mobility increases, has more avoided the production of rut disease.
Furthermore, when the area of a single rib net is insufficient, a plurality of rib nets are spliced; the interface is connected by the steel ropes which are made of the same material and have the same size with the net lines of the rib nets according to the weaving specification of the rib nets.
Compared with the prior art, the asphalt pavement of the invention is additionally provided with the rib net on the surface layer to form an integral structure, the rib net is longitudinally stretched and transversely folded under the action of the tire on the pavement, the transverse pushing action of the tire pressure on the pavement is reduced, and the track diseases are greatly reduced; the reinforcing structure is formed by matching the rib net with asphalt concrete with certain flexibility, so that the purpose of dispersing load is achieved, and reflection cracks are prevented to a certain extent; and the reinforcing mesh can effectively disperse stress when deforming slightly, and can not generate concentrated stress like a rigid cement concrete base layer, so that the bearing pressure and high-strength impact force of the pavement are quickly dispersed into the whole pavement by a plurality of net ropes, and the pavement strength is obviously improved. The anti-cracking performance and the shock resistance of the asphalt pavement are greatly improved by additionally arranging the reinforcement mesh, so that the durability of the pavement is improved, and the service life of the pavement is prolonged. The technology disclosed by the invention is suitable for road positions which are easy to generate ruts especially on road sections which have large traffic volume and are frequently braked and started, such as traffic light intersections.
Drawings
FIG. 1 is a schematic structural view of a reinforced asphalt pavement according to the present invention.
Fig. 2 is a schematic diagram of the arrangement structure of the rib net in the invention.
Detailed Description
The structure and method of the present invention will be further described with reference to the accompanying drawings.
As shown in the attached figure 1, the asphalt pavement structure comprises a cement concrete base layer (3), an asphalt concrete pavement layer (2) and an uppermost rib net (1); the cement concrete base layer (3) and the asphalt concrete pavement layer (2) adopt concrete materials for paving conventional roads; the rib net (1) is a flexible steel rope grid and is formed by weaving steel ropes with the diameter of 6mm, meshes are prismatic holes with the diameter of 10cm multiplied by 10cm, and two steel ropes are mutually twisted at the node of the rib net. When the area of a single rib net is insufficient, a plurality of rib nets are spliced; the interface is connected by the steel rope with the same material and size as the net line according to the knitting specification of the rib net.
The construction method of the asphalt pavement with the paved rib net mainly comprises the following steps:
s1, after the pavement is finished, paving a cement concrete base layer;
s2, paving an asphalt concrete pavement layer on the cement concrete base layer and raking the pavement layer, wherein the two sides and two ends of the road section to be paved with the reinforcement net leave about 20cm of vacant space, and the asphalt concrete pavement layer is not compacted temporarily;
s3, cutting the rib net, spreading the cut rib net on the asphalt concrete pavement layer, spreading the rib net as far as possible, and transversely stretching the rib net by about 5 percent of the width; the edges of the periphery of the rib net are bent downwards and extend to the cement concrete base layer, the extending length is 20cm, and the left vacant space is fully paved; fixing the edges of the rib nets on the cement concrete base layer by using steel nails, and then filling asphalt concrete at the vacant positions;
cutting rib nets according to the paved road surface to enable the arrangement of the rib nets to meet the condition that the net lines and the direction of the road form an included angle of about 30 degrees, as shown in the attached drawing 2, the meshes of the rib nets are prismatic, and the smaller inner angle is about 60 degrees, namely the included angle of each net line and the direction of the road is about 30 degrees;
s4, after flattening the rib net, compacting the pavement, embedding the rib net into the asphalt concrete pavement layer and wrapping the rib net, and completing one-time passing of a pressing vehicle to enable the pavement to be integrally flat;
and S5, putting the pavement into use after the pavement is qualified.
The above description is only for the purpose of illustrating embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and modifications and variations of the above described embodiments may be made by those skilled in the art without departing from the spirit of the present invention.
Claims (9)
1. The asphalt pavement additionally paved with the rib nets structurally comprises a cement concrete base layer and an asphalt concrete pavement layer, and is characterized by also being provided with the rib nets, wherein the rib nets are paved on the upper side of the asphalt concrete pavement layer; the net head line of the rib net forms an angle of 20-40 degrees with the direction of the road; after the rib net is flattened, a pressing vehicle passes through and compacts the pavement, and meanwhile, the rib net is pressed and embedded into the asphalt concrete pavement layer to enable the pavement to be integrally flattened;
when a vehicle passes, the net ropes act simultaneously, and the longitudinal shear stress stretches the rib net along the longitudinal direction and folds the rib net along the transverse direction to resist the transverse pushing action of the tire pressure on the road surface.
2. The asphalt pavement according to claim 1, wherein the web is bent downward at both side edges of the pavement and at both end edges of the web in the direction of the road and extends to the bottom of the asphalt concrete pavement layer by not less than 15 cm.
3. The asphalt pavement according to claim 2, wherein each edge of said web is fixed to said cement concrete base layer by steel nails.
4. An asphalt pavement according to any one of claims 1 to 3, characterised in that said reinforcing mat is a flexible metal mat.
5. The asphalt pavement according to claim 4, wherein said reinforcing mesh is a grid of prismatic mesh woven from steel wire ropes having a diameter of 4-10 mm; and at the node of the rib net, two steel wire ropes are mutually twisted.
6. The asphalt pavement according to claim 5, wherein the mesh of said mat is 8cm x 8cm to 12cm x 12 cm.
7. A method of constructing an asphalt pavement according to any one of claims 1 to 6, comprising the steps of:
s1, after a pavement to be paved is finished, paving a cement concrete base layer;
s2, paving an asphalt concrete pavement layer on the cement concrete base layer and raking the pavement layer, wherein at least 15cm of spare space is left on two side edges and two ends of the reinforced net paving section, and the asphalt concrete pavement layer is not compacted temporarily;
s3, cutting the rib net, spreading and paving the rib net on the asphalt concrete pavement layer, and filling asphalt concrete on the rib net at the vacant position of the asphalt concrete;
s4, compacting the pavement, and embedding the rib net into the asphalt concrete pavement layer;
and S5, putting the road into use after the road surface is inspected to be qualified.
8. The method of constructing an asphalt pavement according to claim 7, wherein the web is stretched 4 to 8% of the width in the transverse direction after being unfolded and fixed to the cement concrete base layer at both side edges of the web using steel nails at S3.
9. The asphalt pavement construction method according to claim 8, wherein when a single web is insufficient in area, a plurality of webs are spliced; the interface is connected by the steel ropes which are made of the same material and have the same size with the net lines of the rib nets according to the weaving specification of the rib nets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892368.2A CN106337351B (en) | 2016-10-13 | 2016-10-13 | Bituminous pavement additionally provided with paving rib net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892368.2A CN106337351B (en) | 2016-10-13 | 2016-10-13 | Bituminous pavement additionally provided with paving rib net |
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| Publication Number | Publication Date |
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| CN106337351A CN106337351A (en) | 2017-01-18 |
| CN106337351B true CN106337351B (en) | 2020-08-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974892A (en) * | 2017-11-14 | 2018-05-01 | 唐华国 | A kind of environment protection pavement and its construction method |
| CN110055848B (en) * | 2019-04-28 | 2020-12-08 | 长安大学 | Stress decomposition type pavement structure layer |
| CN111576124B (en) * | 2020-05-30 | 2021-12-03 | 山东交通职业学院 | Highway structure and pavement method |
| CN114250661B (en) * | 2021-12-17 | 2023-08-15 | 绍兴市城投再生资源有限公司 | Prestressed reinforced stable fine-grained soil base layer and construction method and device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345844B1 (en) * | 1988-06-06 | 1994-11-30 | N.V. Bekaert S.A. | Welded netting with deformed stretching wires and method of making such netting |
| CN2581476Y (en) * | 2002-10-28 | 2003-10-22 | 李兰英 | Road surface structural layer |
| CN1473999A (en) * | 2002-08-05 | 2004-02-11 | 李兰英 | Ribbed lattice |
| CN101831854A (en) * | 2010-05-26 | 2010-09-15 | 重庆市智翔铺道技术工程有限公司 | Composite reinforced pouring type bituminous concrete |
| CN202881797U (en) * | 2012-09-18 | 2013-04-17 | 谭纯霖 | Asphalt pavement structure |
-
2016
- 2016-10-13 CN CN201610892368.2A patent/CN106337351B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345844B1 (en) * | 1988-06-06 | 1994-11-30 | N.V. Bekaert S.A. | Welded netting with deformed stretching wires and method of making such netting |
| CN1473999A (en) * | 2002-08-05 | 2004-02-11 | 李兰英 | Ribbed lattice |
| CN2581476Y (en) * | 2002-10-28 | 2003-10-22 | 李兰英 | Road surface structural layer |
| CN101831854A (en) * | 2010-05-26 | 2010-09-15 | 重庆市智翔铺道技术工程有限公司 | Composite reinforced pouring type bituminous concrete |
| CN202881797U (en) * | 2012-09-18 | 2013-04-17 | 谭纯霖 | Asphalt pavement structure |
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| CN106337351A (en) | 2017-01-18 |
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Effective date of registration: 20200728 Address after: 510000 14 floor, Jia Ye mansion 318, Dongfeng Middle Road, Yuexiu District, Guangzhou, Guangdong Applicant after: GUANGZHOU RAPID TRAFFIC CONSTRUCTION Co.,Ltd. Address before: 536100 the Guangxi Zhuang Autonomous Region Lianzhou Hepu County town of Beihai City Village Village Station No. 19 Applicant before: Yu Weirong |
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